Transcript Ecology CST Practice Questions

Ecology CST Practice
Questions
2009-2010
Question 1
Bacteria living in nodules on the roots of legumes
have the ability to fix atmospheric nitrogen into
a water-soluble form that plants can use. The
bacteria absorb sugar from the plants’ roots.
Which describes the relationship between the
bacteria and the legume plants?
A commensalism
B mutualism
C parasitism
D predation
Question 2
A. Mouse
B. Hawk
C. Grass
D. Frog
Question 3
The crab Lybia tessellata carries a pair of sea
anemones on its claws. The crab uses the sea
anemone’s stinging tentacles as protection and the
sea anemone obtains small food particles released
by the crab as it feeds. Which type of symbiotic
relationship does this best illustrate?
A commensalism
B mutualism
C parasitism
D predation
Question 4
Which substance is considered to
be a factor affecting Earth’s
ozone layer?
A chlorofluorocarbons
B ethyl alcohol
C nitrogen gas
D water vapor
Question 5
Which graph represents the maximum carrying
capacity of a bacterial colony?
Questions 8
Questions 7 and 8
Questions 9
Questions 10
Questions 11
Questions 12
Questions 13
The diagram represents the
pyramid of biomass:
Questions 14
Questions 15